(1:26 p.m. EDT) -- American Queen is en route to Pittsburgh sans its signature paddlewheel after a stress fracture in the paddlewheel forced an unscheduled stopover in Maysville, Kentucky. Technicians replaced one of the boat's Z-drives and removed the paddlewheel as part of the emergency repairs.

The boat is expected to sail straight to Pittsburgh, arriving tomorrow, on a revised itinerary with no port stops, American Queen Steamboat Company president & COO Ted Sykes said in a prepared statement.

According to Seatrade Insider, American Queen had been docked alongside Maysville, a small town southeast of Cincinnati, since Sunday afternoon. It departed yesterday morning. Passengers remained onboard the entire time.

In Pittsburgh, the boat will resume its regularly scheduled itinerary, a reverse sailing from Pittsburgh to Cincinnati, under the power of its Z-drives. The paddlewheel will be reassembled once repairs have been made, American Queen Steamboat Company said.

Passengers on the affected sailing may choose between 25 percent off a future cruise or a free sailing onboard the July 4 return trip from Pittsburgh to Cincinnati.

Cruise Critic has reached out to American Queen Steamboat Company for more information.